kan ikke sende til specifik domæne - mailserver problem

Fri 2007-04-13 22:14:02: Parsing Message <xxxxxxxxxxxxxxxxxx\pd35000000083.msg>
Fri 2007-04-13 22:14:02: From: xxx@totalpc.dk
Fri 2007-04-13 22:14:02: To: yyy@lic-mail.dk
Fri 2007-04-13 22:14:02: Subject: =?iso-8859-1?Q?P=E5?= vegne af xxx
Fri 2007-04-13 22:14:02: Message-ID: <WorldClient-F200704132107.AA07140000@totalpc.dk>
Fri 2007-04-13 22:14:02: MX-record resolution of [lic-mail.dk] in progress (DNS Server: 192.168.2.1)...
Fri 2007-04-13 22:14:02: *  P=010 S=000 D=lic-mail.dk TTL=(151) MX=[fpo.mail.dk] {80.160.76.237}
Fri 2007-04-13 22:14:02: Attempting MX: P=010 S=000 D=lic-mail.dk TTL=(151) MX=[fpo.mail.dk] {80.160.76.237}
Fri 2007-04-13 22:14:02: Attempting SMTP connection to [80.160.76.237 : 25]
Fri 2007-04-13 22:14:02: Waiting for connection...
Fri 2007-04-13 22:14:02: Connection established (192.168.2.10 : 1958 -> 80.160.76.237 : 25)
Fri 2007-04-13 22:14:02: Waiting for protocol initiation...
Fri 2007-04-13 22:14:02: <-- 421 Service not available
Fri 2007-04-13 22:14:02: --> QUIT
Fri 2007-04-13 22:14:02: Socket connection closed by the other side (how rude!)
Fri 2007-04-13 22:14:02: This message is 66 minutes old; it has 0 minutes left in this queue
Fri 2007-04-13 22:14:02: Primary queue lifetime exceeded; message placed in retry queue
--- End Transcript ---


Hvad er det lige der sker her? Brugeren på mit domæne kan ikke sende til lic-mail.dk og lic-mail.dk kan ikke sende til mit totalpc.dk. Det er umiddelbart det eneste domæne jeg har haft problemer med.....alle andre virker fint..
Hvad kan være galt?